Isabel 6 - Error: Your card is not inserted in an authorized Isabel card reader... (44873)

The card reader to be used for Isabel 6 should look like the one shown below and it will only work when connected to a PC or Mac.

 
If you are using the correct reader but still receive the error message, follow these steps:

1. Remove the Isabel SmartCard from the reader.
2. Disconnect the card reader and plug it into another USB port. 
3. Unplug the USB cable from the card reader itself, then reconnect it.
4. Now, insert your Isabel SmartCard and try to logon to Isabel 6.

If the above steps did not solve the issue, reinstall the driver of the card reader.